#include <at89c51RC2.h>
#include <I2C.h>

#define AT24C02_ADDRESS_W 0xA0 
#define AT24C02_ADDRESS_R 0xA1 

/**
  * @brief AT24C02写入一个字节
  * @param WordAddress 字节写入的地址
  * @param Data 要写入的数据
	* @retval 无
  */
void AT24C02_WriteByte(unsigned char WordAddress,Data)
{
	I2C_Start();
	I2C_SendByte(AT24C02_ADDRESS_W);
	I2C_ReceiveAck();
	I2C_SendByte(WordAddress);
	I2C_ReceiveAck();
	I2C_SendByte(Data);
	I2C_ReceiveAck();
	I2C_Stop();
}	

	
/**
  * @brief AT24C02读取一个字节
  * @param WordAdress 要读出的字节的地址
  * @retval Data 读出的数据
	*/
unsigned char AT24C02_ReadByte(unsigned char WordAddress)
{
	unsigned char Data;
	
	I2C_Start();
	I2C_SendByte(AT24C02_ADDRESS_W);
	I2C_ReceiveAck();
	I2C_SendByte(WordAddress);
	I2C_ReceiveAck();
	I2C_Start();
	I2C_SendByte(AT24C02_ADDRESS_R);
	I2C_ReceiveAck();
	Data=I2C_ReceiveByte();
	I2C_SendAck(1);
	I2C_Stop();
	
	return Data;
}